Finding the Fourth Proportional to 30,810.61, 42,520.61 and 17,376.96

Step by Step Solution

1. Step 1: Write the proportion equation
   30,810.61 : 42,520.61 = 17,376.96 : x
2. Step 2: Convert to fraction form
   30,810.61/42,520.61 = 17,376.96/x
3. Step 3: Cross multiply
   30,810.61x = 42,520.61 × 17,376.96
4. Step 4: Simplify right side
   30,810.61x = 738,878,939.15
5. Step 5: Solve for x
   x = 738,878,939.15/30,810.61
6. Step 6: Final answer
   x = 23,981.31